English verb conjugation
MAY UNDERRUN

Irregular verb: underrun - underran - underrun

Affirmation

Simple form	V-ing form
I may underrun you may underrun he may underrun we may underrun you may underrun they may underrun	I may be underruning you may be underruning he may be underruning we may be underruning you may be underruning they may be underruning
Perfect	V-ing perfect
I may have underrun you may have underrun he may have underrun we may have underrun you may have underrun they may have underrun	I may have been underruning you may have been underruning he may have been underruning we may have been underruning you may have been underruning they may have been underruning

Negation

Simple form	V-ing form
I mayn't underrun you mayn't underrun he mayn't underrun we mayn't underrun you mayn't underrun they mayn't underrun	I mayn't be underruning you mayn't be underruning he mayn't be underruning we mayn't be underruning you mayn't be underruning they mayn't be underruning
Perfect	V-ing perfect
I mayn't have underrun you mayn't have underrun he mayn't have underrun we mayn't have underrun you mayn't have underrun they mayn't have underrun	I mayn't have been underruning you mayn't have been underruning he mayn't have been underruning we mayn't have been underruning you mayn't have been underruning they mayn't have been underruning

Interrogative form

Simple form	V-ing form
may I underrun? may you underrun? may he underrun? may we underrun? may you underrun? may they underrun?	may I be underruning? may you be underruning? may he be underruning? may we be underruning? may you be underruning? may they be underruning?
Perfect	V-ing perfect
may I have underrun? may you have underrun? may he have underrun? may we have underrun? may you have underrun? may they have underrun?	may I have been underruning? may you have been underruning? may he have been underruning? may we have been underruning? may you have been underruning? may they have been underruning?

Interro-negative form

Simple form	V-ing form
mayn't I underrun? mayn't you underrun? mayn't he underrun? mayn't we underrun? mayn't you underrun? mayn't they underrun?	mayn't I be underruning? mayn't you be underruning? mayn't he be underruning? mayn't we be underruning? mayn't you be underruning? mayn't they be underruning?
Perfect	V-ing perfect
mayn't I have underrun? mayn't you have underrun? mayn't he have underrun? mayn't we have underrun? mayn't you have underrun? mayn't they have underrun?	mayn't I have been underruning? mayn't you have been underruning? mayn't he have been underruning? mayn't we have been underruning? mayn't you have been underruning? mayn't they have been underruning?